Chapel Hill, N.C. — The state medical examiner on Monday released the autopsies of three of four people killed last month in what Fayetteville police determined to be a murder-suicide.

Investigators say William "Billy" Maxwell Jr., 47, killed his wife, Kathryn; his daughter, Connor; and his son, Cameron, at their 314 West Park Drive home before killing himself.Family members found the bodies inside the residence on Nov. 2.

The autopsies for Connor Maxwell and Cameron Maxwell confirm that they died from gunshot wounds to the head. Connor Maxwell also had blunt force trauma to the scalp that contributed to his death. William Maxwell died of self-inflicted gunshot wounds to the head and neck.

An autopsy report released last week indicated that Kathryn Maxwell died from two gunshot wounds to the head.

Police have not said what a possible motive was for the shootings.

Some who knew the family, however, have said that William Maxwell had recently admitted to thinking irrational thoughts. Others said nothing in his behavior would have suggested to them that he might become violent.

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